List Archive: gentoo-amd64
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Peter Humphrey posted <42CEA2DC.70205@...>, excerpted below, on
Fri, 08 Jul 2005 16:59:24 +0100:
> I'll try it soon with parallel instances to see if that will flush out
> some swap (while running in serial the disk activity is in flushing and
> re-reading file buffers)
Note that there's a kernel command line parameter, something like mem=512M
or some such (from memory), that will manually tell the kernel how much
physical memory to use. It was designed for systems that had more memory
than the kernel could detect, some years ago, but it also works well for
telling the kernel to use less memory than you actually have, if you want
to do some experimentation or something, perfect for forcing more swapping
activity than you'd normally get (zero swapping <g>), or for watching the
kernel OOM (out of memory) killer in action, if you don't have enough
memory including swap.
I'd know how to add it to my LILO kernel command line, but couldn't tell
you how to add it to GRUB, tho it shouldn't be difficult.
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